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Status unknownNCT03717454Updated Nov 20, 2018

Dopamine D2 Receptors(D2R) Imaging in Prolactinomas

An interventional study of Surgery and Drug treatment in Prolactinoma, sponsored by Zhebao Wu. Status unknown. Open to participants aged 18 Years to 65 Years. Per ClinicalTrials.gov, last updated 2018-11-20.

Sponsored by Zhebao Wu · Not applicable, Interventional, and Treatment

The sponsor has not verified this record recently (last verified Nov 2018), so the status shown — last known as Not yet recruiting — may be out of date.
Phase
Not applicable
Study type
Interventional
Enrollment
50
Allocation
Non-randomized
Ages
18 Years to 65 Years
Sex
All
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Study summary

To study the in vivo expression of dopamine D2 receptors in prolactinoma and the predictive role of dopamine D2 receptors PET-MR imaging in the therapeutic effect of dopamine agonists.

Read the detailed description

The dopamine agonist(DA),such as cabergoline(CAB) and bromocriptine(BC), has been used widely in the treatment of prolactinomas, but its clinical use is hampered by intolerance and/or resistant in some patients. It had been showed that DA inhibit prolactin secretion by binding to and activating dopamine D2 receptors.PET-MR combined MR images with PET function images is substantial to evaluate the expression of dopamine D2 receptors.The aim is to study the in vivo expression of dopamine D2 receptors in prolactinoma and the predictive role of dopamine D2 receptors PET-MR imaging in the therapeutic effect of DA.

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Conditions studied

  • Prolactinoma

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Keywords

  • Dopamine agonist
  • Dopamine D2 receptors
  • PET-MR
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In context

Prolactinoma

26 studies on the registry are indexed under Prolactinoma; 7 are open to participants now.

This study's planned enrollment of 50 is below the median of 60 across 15 interventional studies indexed under Prolactinoma.

Browse Prolactinoma studies →

Lead sponsor

Zhebao Wu is the lead sponsor of 5 studies on the registry; none are open to participants now.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
18 Years to 65 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  1. Hyperprolactinemia;
  2. Enhanced pituitary MRI shows sella regional tumor;
  3. Aged between 18 and 65 years old, either sex;
  4. Karnofsky performance status ≥ 70;
  5. The patient has signed the informed consent.

Exclusion criteria

Exclusion Criteria:

  1. Patients concomitantly taking the psychotropic drugs or other drugs causing elevated PRL ;
  2. Patients with parkinson disease and is taking dopaminergic agents;
  3. Patients with prolactinoma who received Gamma knife treatment;
  4. Pregnant or lactating women, or women preparing pregnant;
  5. Patients with poor compliance, who cannot implement the program strictly.
  6. History of allergic reactions attributed to compounds of similar chemical or biologic composition to cabergoline.
  7. Patients with claustrophobia
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Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Non-randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
50 participants (estimated)

Study arms

  • Experimental
    Drug treatment

    Subjects are treated with CAB tablets 2mg/week or BC tablets 7.5mg/day.The pituitary hormone levels, tumor volume,visual acuity and visual field scale will be measured every 3 months.MRI showed that the tumors shrunk significantly.

    Drug: Drug treatment

  • Experimental
    Surgery

    Subjects are treated with CAB tablets 2mg/week or BC tablets 7.5mg/day.The pituitary hormone levels, tumor volume, visual acuity and visual field scale will be measured every 3 months. The CAB or BC fail to decrease prolactinoma size.

    Other: Surgery

Interventions

  • OtherSurgery

    The medication will be stopped if failure to decrease prolactinoma size and the subjects will be advised to endoscopic transphenoidal pituitary surgery .

  • DrugDrug treatment

    The medication will continue if DA causes tumors to shrink.

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What researchers measure

Primary outcomes

  1. Change from baseline on PRL level

    Record the result of PRL on every 3 month follow-up visit

    Time frame: Up to 6 months

Secondary outcomes

  1. Change from baseline on tumor volume measured by enhanced pituitary Magnetic Resonance Imaging(MRI)

    Record the tumor volume from enhanced pituitary MRI on every 3 month follow-up visits

    Time frame: Up to 6 months

  2. Change from baseline of visual field scale

    Record the Visual field scale on every 3 month follow-up visit, 0 = normal, no vision loss; 1 = one quadrant vision loss; 2 = two quadrants of vision loss; 3 = three quadrants of vision loss; 4 = four quadrants of vision loss but retain a central tubular vision; 5 = blind

    Time frame: Up to 6 months

  3. Change from baseline of visual acuity

    Record the Visual acuity on every 3 month follow-up visit.

    Time frame: Up to 6 months

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Study locations

No study locations are listed for this record.

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References and documents

Publications

  • Mukherjee J, Majji D, Kaur J, Constantinescu CC, Narayanan TK, Shi B, Nour MT, Pan ML. PET radiotracer development for imaging high-affinity state of dopamine D2 and D3 receptors: Binding studies of fluorine-18 labeled aminotetralins in rodents. Synapse. 2017 Mar;71(3):10.1002/syn.21950. doi: 10.1002/syn.21950. Epub 2016 Nov 30. PubMed 27864853 ↗
  • Melmed S, Casanueva FF, Hoffman AR, Kleinberg DL, Montori VM, Schlechte JA, Wass JA; Endocrine Society. Diagnosis and treatment of hyperprolactinemia: an Endocrine Society clinical practice guideline. J Clin Endocrinol Metab. 2011 Feb;96(2):273-88. doi: 10.1210/jc.2010-1692. PubMed 21296991 ↗
  • Schonitzer V, Haasters F, Kasbauer S, Ulrich V, Mille E, Gildehaus FJ, Carlsen J, Pape M, Beck R, Delker A, Boning G, Mutschler W, Bocker W, Schieker M, Bartenstein P. In vivo mesenchymal stem cell tracking with PET using the dopamine type 2 receptor and 18F-fallypride. J Nucl Med. 2014 Aug;55(8):1342-7. doi: 10.2967/jnumed.113.134775. Epub 2014 Jul 14. PubMed 25024426 ↗

Individual participant data

Plan to share: No — The individual patient Data would not be shared to the third facility, but the sponsor hasn't decided whether to share the individual patient date to the other related studies hold by himself in the future.

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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Nov 20, 2018, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT03717454
Lead sponsor
Zhebao Wu
Collaborators
Xinqiao Hospital of Chongqing, First Hospital of China Medical University, Beijing Tiantan Hospital, First Affiliated Hospital of Wenzhou Medical University, First Affiliated Hospital of Fujian Medical University, Peking Union Medical College Hospital, Huashan Hospital, Chinese PLA General Hospital
Responsible party
Zhebao Wu (Principal Investigator, Ruijin Hospital) — Sponsor-investigator
First posted
Oct 24, 2018
Start date
Dec 1, 2018 (estimated)
Primary completion
Dec 30, 2021 (estimated)
Completion
Jan 31, 2022 (estimated)
Last update
Nov 20, 2018

Study contacts

Weiting Gu, MD
Contact
nowaiting1221@hotmail.com
0086-13917778956
Zhebao Wu, Medical PhD
Contact
zhebaowu@aliyun.com
0086-021-64370045

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is status unknown, as verified in Nov 2018. You cannot join it, but the record below documents what was studied.

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